PROPOSAL BALLOT DUE BY: Wednesday, September 2, 2009

Transcription

1 PROPOSL BLLOT DUE BY: Wednesday, September 2, 2009 NFP 265 FIZ- Standard Methods of Fire Tests for Evaluating Room Fire Growth Contribution of Textile Coverings on Full Height Panels and Walls Staff Liaison: Robert E. Solomon Return Completed Ballot To: Linda MacKay to Fax to One Batterymarch Park, Quincy, M Date: Committee ction Key: = ccept R= Reject P = ccept in Part PR = ccept in Principle PP = ccept in Principle in Part H = Hold With respect to the Committee ctions on the Proposals which accompanied the ballot, please record me as voting: (check one): ffirmative On ll Items. I agree with all committee meeting actions without comment. Please return this Ballot Page only to NFP. ffirmative With Exception(s): I agree with all committee meeting actions Except for the ffirmative with comment, Negative and /or bstention checked below. *Reasons must accompany these votes. When possible, reasons are requested via in a Word Document. Signed: Name: Type or Print black ink Proposal No Log No Section Chapter 1 Committee ction ffirm with Comment* Vote Negative* bstain* Title , 1.1.2, and (New) Expanded Vinyl Wall Covering Textile and CP CP

2 Proposal No Log No. Section nnex B Committee ction ffirm with Comment* Vote Negative* bstain* 2

3 Report on Proposals November 2010 NFP Log #2 1.1 Scope This standard describes a test method for determining the contribution of textile or expanded vinyl wall coverings to room fire growth during specified fire exposure conditions * This test method shall be used to evaluate the flammability characteristics of textile or expanded vinyl wall coverings where such materials constitute the exposed interior surfaces of buildings and demountable, relocatable, full-height partitions used in open building interiors This test method shall not be used to evaluate the fire endurance resistance of assemblies, nor shall it be used to evaluate the effect of fires originating within a wall assembly The test method shall not be used for the evaluation of floor or ceiling finishes * This test method shall not apply to fabric-covered, lower-than-ceiling-height, freestanding, prefabricated panel furniture systems. 1.2 Purpose This test method shall measure certain fire performance characteristics of textile or expanded vinyl wall covering materials in an enclosure under specified fire exposure conditions This test method shall determine the potential extent to which the textile or expanded vinyl wall covering materials contribute to fire growth in a room and the potential for fire spread beyond the room under the particular conditions simulated The contribution of the textile or expanded vinyl wall covering to fire growth shall be measured by constant monitoring of the incident heat flux on the center of the floor, the temperature of the gases in the upper part of the room, the rate of heat release, the smoke release, and the time to flashover. The NFP 265 test method is used in the codes for textile wall coverings and expanded vinyl wall coverings. It is not used for ceiling coverings or for any other material. The change from fire endurance to fire resistance is explained in a different proposal Log #1 Standard Methods of Fire Tests for Evaluating Room Fire Growth Contribution of Textile or Expanded Vinyl Wall Coverings on Full Height Panels and Walls The NFP 265 test method is used in the codes for textile wall coverings and expanded vinyl wall coverings. It is not used for ceiling coverings or for any other material. 1

4 Report on Proposals November 2010 NFP Log # * This standard describes a test method for determining the contribution of textile wall coverings, and expanded vinyl wall coverings, to room fire growth during specified fire exposure conditions * This test method shall be used to evaluate the flammability characteristics of textile wall coverings, or expanded vinyl wall coverings, where such materials constitute the exposed interior surfaces of buildings and demountable, relocatable, full-height partitions used in open building interiors One important difference between the ignition source used in this test method and that used in NFP 286, Standard Methods of Fire Tests for Evaluating Contribution of Wall and Ceiling Interior Finish to Room Fire Growth, is that the flame in the NFP 265 ignition source does not reach the ceiling. Thus, the NFP 265 ignition source should not be used for testing materials that are to be installed on the ceiling. Codes permit NFP 265 to be used for textile wall coverings and for expanded vinyl wall coverings. It is important to explain in this test method, just as in NFP 286, that the NFP 265 flame does not reach the ceiling and that the test method should not be used for testing ceiling materials Log # This test method shall not be used to evaluate the fire resistance endurance of assemblies, nor shall it be used to evaluate the effect of fires originating within a wall assembly. The term fire endurance is being replaced in all NFP documents by the preferred term fire resistance Log #5 Wall covering consisting of a woven textile backing, an expanded vinyl base coat layer and a nonexpanded vinyl skin coat The expanded base coat layer is a homogeneous vinyl layer that contains a blowing agent. During processing, the blowing agent decomposes, causing this layer to expand by forming closed cells. The total thickness of the wall covering is approximately 1.4 to 1.8 mm (0.055 inch to inch). definition is needed for expanded vinyl wall covering. 2

5 Report on Proposals November 2010 NFP Log #8 Glossary of Terms Technical dvisory Committee, 3.3.2* Textile. woven fabric; also s used in this document, originally a woven fabric, now generally applied to (1) staple fibers and filaments suitable for conversion to or use as yarns or for the preparation of nonwoven fabrics, (2) yarns made from natural or manufactured fibers, and (3) fabrics made from fibers as defined in (1) and (2) and from yarns Textile. The definition of textile is intended to include carpets or textile floor coverings. It is important to have consistent definitions of terms within NFP. The present definition is too limiting and should be expanded. NFP 265 should become the primary document responsible for the term because it is a term widely used in NFP and NFP 265 is more widely used than NFP 705, at present responsible. NFP 705 definition: Textile. material made of natural or man-made fibers and used for the manufacture of items such as curtains, clothing, and furniture fittings. I am the chairman of the NFP dvisory Committee on the Glossary on Terminology. The committee was created by NFP Standards Council to provide consistency in terminology throughout the NFP documents Log #CP1 Technical Committee on Fire Tests, Revise to read: The ignition source for the test shall be a gas burner with a nominal 305 mm 305 mm (12 in. 12 in.) porous top surface of refractory material as shown in Figure The refractory material, through which the gas is supplied, shall be permitted to be either of the following: (1) 25.4 mm (1 in.) thick porous ceramic fiberboard over a 152 mm (6 in.) chamber (2) layer of white Ottawa silica sand not less than 102 mm (4 in.) deep for providing the horizontal surface through which the gas is supplied. n option no longer used is removed Log #CP2 Technical Committee on Fire Tests, Revise as follows: The burner enclosure shall be located such that the outer edge of the diffusion sand surface is located 51 mm (2 in.) from both walls, in a corner of the room, opposite the door. Revised to clarify the location of the burner. 3

6 Report on Proposals November 2010 NFP Log #6 5.1 Specimen Mounting Test specimens shall be mounted on a substrate that is appropriate to the intended application * Where a manufacturer specifies use of an adhesive, specimens shall be mounted in a manner that uses the adhesive and application rate specified by the manufacturer and that is comparable to actual field installations * Whenever a wall covering system uses an adhesive to attach a wall covering material, the adhesive specified by the manufacturer shall be used for construction of the test specimen in accordance with the wall covering manufacturer application instructions If the wall covering system is a factory-produced wall panel, the adhesive shall be the same one used in the manufacture of the factory-produced wall panel Wall Coverings Intended to be pplied Directly to a Noncombustible Wall or Ceiling Surface - If the wall coverings are intended to be applied directly to a noncombustible wall or ceiling surface, the specimens shall consist of the wall covering mounted on a 6 mm (1/4 in.) thick fiber-cement board, complying with STM C 1186, Standard Specification for Flat Fiber-Cement Sheets, (Grade II) and passing STM E 136, Standard Test Method for Behavior of Materials in a Vertical Tube Furnace at 750 C Wall Coverings Intended to be pplied over Gypsum Board - If the wall coverings are intended to be applied over gypsum board, the specimens shall consist of the wall covering mounted on a 16 mm (5/8 in.) thick Type X gypsum board, complying with STM C 1396/C 1396M, Specification for Gypsum Board. The gypsum board shall not be required to be mounted on studs Whenever a wall covering has been tested using the test specimen described in (over gypsum board), it shall not be required to be additionally tested mounted on a fiber-cement board Wall Coverings Intended to be pplied over a Wood Substrate - If the wall coverings are intended to be applied over a wood substrate, the specimens shall consist of the wall covering mounted on untreated plywood, with a face veneer of Douglas fir. The plywood shall have the same thickness as the wood substrate used in field practice, and shall comply with NIST Voluntary Product Standard PS 1-07, Structural Plywood. The plywood shall carry a grade stamp indicating that the plywood has been graded PS B and is for exterior exposure. The plywood shall contain a grade stamp issued by a quality control agency. lternatively, the plywood shall be permitted to be stamped as conforming to CS Standard O121 (Douglas fir plywood) Wall Coverings Intended to be pplied over Substrates other than Wood, Gypsum Board or Noncombustible Surfaces - If the wall coverings are intended to be applied over substrates other than wood, gypsum board or noncombustible surfaces, the specimens shall consist of the wall covering mounted on the substrate to which they are to be applied for actual use according to the adhesive and application technique specified by the manufacturer Wall Coverings Not Intended to be dhered Directly to a Wall Surface, but Intended to be Otherwise Supported by Framing or a Track System The specimens shall consist of the wall covering mounted for test in a manner that is representative of its installation Where a wall covering specimen exhibits a distinct direction, the wall covering sample shall be mounted such that the machine direction is vertical, unless the manufacturer indicates that a different method of mounting is to be used in actual installations It has been shown that the specific adhesive used to secure a specimen can significantly affect the fire performance of a wall covering system, and therefore the adhesive utilized should be the same as that intended for actual use. NFP 265 is used for code application for textile and expanded vinyl coverings. The present section 5.1 is too vague and needs to be made more specific and more detailed. This information came from STM E 24204, a specimen preparation and mounting practice for vinyl, paper and textile wall coverings in the Steiner tunnel test, STM E 84. 4

7 Report on Proposals November 2010 NFP 265 E2404. The committee notes that the reference in the substantiation to STM E24204 should be STM Log #7 B.1 The acceptance criteria in Section B.2 have been used by several of the model code organizations such as the International Conference of Building Officials (ICBO), the Building Officials and Code dministrators International (BOC), and the Southern Building Code Congress International (SBCCI) and are provided as a guide for the user of the test method described in this standard. Similar criteria have also been in use in the International Building Code (IBC), and International Fire Code (IFC), both issued by the International Code Council (ICC), and in NFP 101, Life Safety Code, and NFP 5000, Building Construction and Safety Code. The acceptance criteria in Section B.2 are used in the International Fire Code, issued by the International Code Council, primarily for existing textile and expanded vinyl wall coverings. The acceptance criteria in Section B.3, or equivalent ones, have been used by the same codes and continue to be used. B.2 B.3 Textile wall coverings or expanded vinyl wall coverings should be considered as demonstrating satisfactory performance if, during the Method B test protocol, both of the following conditions are met: (1) Flame should not spread to the ceiling during the 40 kw exposure. (2) During the 150 kw exposure, the following criteria should be met: (a) Flame should not spread to the outer extremities of the samples on the 2.44 m 3.66 m (8 ft 12 ft) walls. (b) (3) Flashover should not occur. (4) The total smoke released throughout the test should not exceed 1,000 m 2. The NFP 265 test method is used in the codes for textile wall coverings and expanded vinyl wall coverings. It is not used for ceiling coverings or for any other material. The clarifications explain what is at present used in the codes. 5